在django测试中设置会话变量 [英] Setting a session variable in django tests
问题描述
这个工作
def test_access_to_home_with_location(self):
self.client.login(username = self.user .get_username(),password ='pass')
session = self.client.session
session ['location'] = [42]
session.save()
响应= self.client.get(reverse('home'))
但这个
def test_access_to_home_with_location(self):
session = self.client.session
session ['location'] = [42]
session.save()
response = self.client.get(reverse('home'))
与
分开 =============== ================================================== ===
错误:test_access_to_home_with_location(posts.tests.HomeViewTestCase)
----------------------------- -----------------------------------------
追溯(最近的电话最后):
文件tests.py,第32行,在test_access_to_home_with_location
session.save()
AttributeError:'dict'对象没有属性'save'
所以似乎在调用 self.client.login()
self.client.session
只是一个空字典。有没有办法将其初始化为会话对象?
当客户端中没有设置cookie时, session
属性是一个空的dict,因此你的错误。以下是 django.test.client.Client的相关来源
:
获取当前会话变量
如果设置中为'django.contrib.sessions'.INSTALLED_APPS:
engine = import_module(settings.SESSION_ENGINE)
cookie = self.cookies.get(settings.SESSION_COOKIE_NAME,None)
如果cookie:
返回engine.SessionStore(cookie.value)
return {}
session = property(_session)
由于您没有登录找不到与 settings.SESSION_COOKIE_NAME
匹配的密钥的Cookie。
但是,您可以手动创建一个会话对象,如下所示:
如果不是self.client.session:
engine = import_module(settings.SESSION_ENGINE)
self.client.session = engine.SessionStore()
self.client.session.save ()
这是登录的方式
客户端中的处理程序
创建一个新的会话。
编辑:我意识到你也需要保存会话键入一个cookie,以便下一个请求使用相同的会话
这是一个帮助函数,你可以放在你的客户端
创建新会话和引用cookie的子类:
def set_session_data(self,key,value) :
无论身份验证设置会话数据的快捷方式
如果不是self.client.session:
#在数据库中保存新会话并添加Cookie引用它
engine = import_module(settings.SESSION_ENGINE)
self.client.session = engine.SessionStore()
self.client.session.save()
session_cookie = settings.SESSION_COOKIE_NAME
self.client.cookies [session_cookie] = self.client.session.session_key
cookie_data = {
'max-age':无,
'path': '/',
'domain':settings.SESSION_COOKIE_DOMAIN,
'secure':settings.SESSION_COOKIE_SECURE或None,
'expires':None,
}
self .client.cookies [session_cookie] .update(cookie_data)
self.client.session [key] = value
self.client.session.save()
注意:我不是说这是唯一的方法,这是我通过阅读发现的一种方式django源代码。此答案中的代码未经测试/运行,因此可能需要进行微调。
进一步阅读
要了解 SessionStore
的工作原理,您可以查看 django.contrib.sessions
模块。 / p>
要了解如何处理客户端
中的会话和Cookie,您可以查看 django。 test.client.Client
。
This works
def test_access_to_home_with_location(self):
self.client.login(username=self.user.get_username(), password='pass')
session = self.client.session
session['location'] = [42]
session.save()
response = self.client.get(reverse('home'))
But this
def test_access_to_home_with_location(self):
session = self.client.session
session['location'] = [42]
session.save()
response = self.client.get(reverse('home'))
breaks with
======================================================================
ERROR: test_access_to_home_with_location (posts.tests.HomeViewTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
File "tests.py", line 32, in test_access_to_home_with_location
session.save()
AttributeError: 'dict' object has no attribute 'save'
So it seems with out calling self.client.login()
self.client.session
is just an empty dictionary. Is there a way to initialize it as a session object?
When no cookies are set in the client the session
property is a empty dict, hence your error. Here is the relevant source of django.test.client.Client
:
def _session(self):
"""
Obtains the current session variables.
"""
if 'django.contrib.sessions' in settings.INSTALLED_APPS:
engine = import_module(settings.SESSION_ENGINE)
cookie = self.cookies.get(settings.SESSION_COOKIE_NAME, None)
if cookie:
return engine.SessionStore(cookie.value)
return {}
session = property(_session)
Since you are not logged in the cookie with the key matching settings.SESSION_COOKIE_NAME
is not found.
However you could manually create a session object like this:
if not self.client.session:
engine = import_module(settings.SESSION_ENGINE)
self.client.session = engine.SessionStore()
self.client.session.save()
This is the way the login
handler in Client
creates a new session.
EDIT: I realized you also need to save the session key in a cookie so that the next request uses the same session
Here's a helper function you could put in your Client
sub class that creates a new session and a referencing cookie:
def set_session_data(self, key, value):
"""Shortcut for setting session data regardless of being authenticated"""
if not self.client.session:
# Save new session in database and add cookie referencing it
engine = import_module(settings.SESSION_ENGINE)
self.client.session = engine.SessionStore()
self.client.session.save()
session_cookie = settings.SESSION_COOKIE_NAME
self.client.cookies[session_cookie] = self.client.session.session_key
cookie_data = {
'max-age': None,
'path': '/',
'domain': settings.SESSION_COOKIE_DOMAIN,
'secure': settings.SESSION_COOKIE_SECURE or None,
'expires': None,
}
self.client.cookies[session_cookie].update(cookie_data)
self.client.session[key] = value
self.client.session.save()
Note: I'm not saying this is the only way to do this, this is one way I found out by reading the django source code. The code in this answer is not tested/run, therefor it might need some fine tuning.
Further reading
To read about how SessionStore
works you can look at the django.contrib.sessions
module.
To read about how session and cookies are handled in Client
you can look at django.test.client.Client
.
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